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https://github.com/sqlitebrowser/sqlitebrowser.git
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cde2393539
This is a first rough implementation of QScintilla support as SQL text editor. It should work mostly and build fine with qmake as well as cmake. The new code supports all the features of the old one plus adding a few subtle improvements. The main point of this, however, is reducing the code we have to maintain and making it easier to add new features to the editor.
112 lines
2.7 KiB
C++
112 lines
2.7 KiB
C++
// Scintilla source code edit control
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/** @file LexerModule.cxx
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** Colourise for particular languages.
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**/
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// Copyright 1998-2010 by Neil Hodgson <neilh@scintilla.org>
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// The License.txt file describes the conditions under which this software may be distributed.
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <stdarg.h>
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#include <assert.h>
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#include <ctype.h>
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#include <string>
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#include "ILexer.h"
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#include "Scintilla.h"
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#include "SciLexer.h"
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#include "PropSetSimple.h"
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#include "WordList.h"
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#include "LexAccessor.h"
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#include "Accessor.h"
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#include "LexerModule.h"
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#include "LexerBase.h"
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#include "LexerSimple.h"
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#ifdef SCI_NAMESPACE
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using namespace Scintilla;
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#endif
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LexerModule::LexerModule(int language_,
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LexerFunction fnLexer_,
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const char *languageName_,
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LexerFunction fnFolder_,
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const char *const wordListDescriptions_[]) :
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language(language_),
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fnLexer(fnLexer_),
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fnFolder(fnFolder_),
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fnFactory(0),
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wordListDescriptions(wordListDescriptions_),
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languageName(languageName_) {
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}
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LexerModule::LexerModule(int language_,
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LexerFactoryFunction fnFactory_,
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const char *languageName_,
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const char * const wordListDescriptions_[]) :
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language(language_),
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fnLexer(0),
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fnFolder(0),
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fnFactory(fnFactory_),
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wordListDescriptions(wordListDescriptions_),
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languageName(languageName_) {
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}
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int LexerModule::GetNumWordLists() const {
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if (wordListDescriptions == NULL) {
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return -1;
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} else {
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int numWordLists = 0;
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while (wordListDescriptions[numWordLists]) {
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++numWordLists;
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}
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return numWordLists;
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}
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}
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const char *LexerModule::GetWordListDescription(int index) const {
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assert(index < GetNumWordLists());
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if (!wordListDescriptions || (index >= GetNumWordLists())) {
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return "";
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} else {
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return wordListDescriptions[index];
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}
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}
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ILexer *LexerModule::Create() const {
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if (fnFactory)
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return fnFactory();
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else
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return new LexerSimple(this);
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}
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void LexerModule::Lex(unsigned int startPos, int lengthDoc, int initStyle,
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WordList *keywordlists[], Accessor &styler) const {
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if (fnLexer)
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fnLexer(startPos, lengthDoc, initStyle, keywordlists, styler);
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}
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void LexerModule::Fold(unsigned int startPos, int lengthDoc, int initStyle,
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WordList *keywordlists[], Accessor &styler) const {
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if (fnFolder) {
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int lineCurrent = styler.GetLine(startPos);
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// Move back one line in case deletion wrecked current line fold state
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if (lineCurrent > 0) {
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lineCurrent--;
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int newStartPos = styler.LineStart(lineCurrent);
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lengthDoc += startPos - newStartPos;
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startPos = newStartPos;
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initStyle = 0;
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if (startPos > 0) {
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initStyle = styler.StyleAt(startPos - 1);
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}
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}
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fnFolder(startPos, lengthDoc, initStyle, keywordlists, styler);
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}
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}
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